Hp Designjet T1120 Printer series Manuel d'utilisateur Page 81

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Printing in grayscale
You can adjust the gray balance of your print in similar ways under Windows and Mac OS:
In the Windows driver dialog: select the Color tab, ensure that the Advanced Color
Adjustments box is checked, then press the Settings button beside it.
In the Mac OS Print dialog (T1120): select the Paper Type/Quality panel, then Gray balance.
In the Mac OS Print dialog (T1120ps): select the Color Options panel, then Gray balance.
Under either operating system, you will then be able to make adjustments using separate controls for
highlights, midtones and shadows.
The lightness slider simply makes the whole print lighter or darker. This slider is available under
Windows in the same window as the other grayscale controls; it is available under Mac OS by
selecting Lightness and Hue.
The zone definition sliders can be used to define what you mean by highlight, midtone and shadow.
The other controls for highlight, midtone and shadow can be used to adjust the gray balance of
highlights, midtones and shadows respectively.
The Reset button restores each control to its default setting.
Color management from printer drivers (T1120ps only)
This facility is available when printing on the HP Designjet T1120ps with the PostScript driver.
HP Professional PANTONE Emulation
When you use a named PANTONE color in an image, your application will normally send to the printer
a CMYK or RGB approximation to that color. But the application does not take the printer or the paper
type into account, it merely produces a generic approximation of the PANTONE color, which will look
different on different printers and on different papers.
HP Professional PANTONE Emulation can do a much better job by taking into account the
characteristics of the printer and the paper type. The results look as similar to the original PANTONE
colors as is possible on a given printer using a given paper type. This technology is designed to produce
emulations similar to those set up manually by prepress professionals.
To use HP Professional PANTONE Emulation, all you have to do is to turn it on. In fact, it is normally
on by default.
In the Windows PostScript driver dialog: go to the Color tab and select HP Professional
PANTONE Emulation.
In the Mac OS Print dialog: go to the Color Options panel and select HP Professional
PANTONE Emulation.
72 Chapter 7 Color management ENWW
Color management
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